1) Yeah. 2) This is a bigger deal than a lot of people here seem to think. 3) As Don knows, this is getting addressed in C#9 (finally!) 4) I mean, you could

1) Yeah. 2) This is a bigger deal than a lot of people here seem to think. 3) As Don knows, this is getting addressed in C#9 (finally!) 4) I mean, you could do pretty much all of this with standard LINQ operators and AddToFront (which I end up adding into every project). So I think the example is garbage. What it's really missing is F#'s yield! 5) Yeah, but it's not like anyone uses it.